{"product_id":"soundtube-a3-amp-internal-class-ab-subwoofer-amplifier","title":"SoundTube A3 AMP Internal Class AB Subwoofer Amplifier","description":"\u003cdiv class=\"product-description\"\u003e   \u003ch2\u003eSoundTube A3 AMP Internal Class AB Subwoofer Amplifier\u003c\/h2\u003e      \u003cp\u003eThe Induction Dynamics A3 amplifier is engineered to pair seamlessly with audio\/video pre-amplifiers and receivers featuring built-in low‑frequency crossover circuitry. Designed for applications with selectable crossover frequencies—recommended at 80 Hz with reverse polarity—the A3 maintains distortion below 0.05% at 1 kHz, ensuring clean, powerful bass reproduction.\u003c\/p\u003e      \u003cp\u003eFeaturing a patented non‑distorting frequency‑selective excursion limiter, the A3 delivers consistent performance at high output levels. Its flexible level control (±19 dB in 0.5 dB steps) and multiple switchable voltage gain settings make it ideal for home theaters, commercial AV, and dedicated subwoofer systems.\u003c\/p\u003e      \u003ch3\u003eKey Features\u003c\/h3\u003e   \u003cul\u003e     \u003cli\u003e \u003cstrong\u003ePower Output:\u003c\/strong\u003e 640 W @ 2.5 Ω; 500 W @ 4 Ω; 360 W @ 8 Ω\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eTopology:\u003c\/strong\u003e Class AB amplifier\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eExcursion Limiter:\u003c\/strong\u003e Patented non‑distorting frequency‑selective limiter (\u0026lt; 0.05% distortion @ 1 kHz, 1 W)\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eLevel Controls:\u003c\/strong\u003e ±19 dB in fixed 0.5 dB steps\u003c\/li\u003e   \u003c\/ul\u003e      \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e   \u003cul\u003e     \u003cli\u003e \u003cstrong\u003eFrequency Response (±3 dB):\u003c\/strong\u003e 20 Hz – 20 kHz\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eDamping Factor:\u003c\/strong\u003e 95 dBA\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 300 Ω @ 60 Hz\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eVoltage Gain:\u003c\/strong\u003e 28 dB, 38 dB, 48 dB (externally switchable)\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003eOutput Type:\u003c\/strong\u003e Euroblock connector\u003c\/li\u003e     \u003cli\u003e \u003cstrong\u003ePower Requirements:\u003c\/strong\u003e 120\/240 V AC, 50\/60 Hz, 6 A slow‑blow fuse\u003c\/li\u003e   \u003c\/ul\u003e \u003c\/div\u003e","brand":"EchoForge","offers":[{"title":"Default Title","offer_id":67960023580922,"sku":"SOUNT-A3AMP","price":1699.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0872\/9706\/5210\/files\/1-soundtube-a3-amp_2b82280b-9f24-4087-b694-5e8837c1bc68.jpg?v=1793016223","url":"https:\/\/echooforge.shop\/products\/soundtube-a3-amp-internal-class-ab-subwoofer-amplifier","provider":"EchoForge","version":"1.0","type":"link"}